Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
9 × 10 = ______
27 + 20 = ______
15 + 20 = ______
22 − 10 = ______
50 + 10 = ______
90 − 10 = ______
65 − 10 = ______
54 − 10 = ______
86 + 20 = ______
19 + 20 = ______
4 × 10 = ______
22 + 20 = ______
55 + 20 = ______
36 + 10 = ______
41 − 10 = ______
28 − 10 = ______
78 − 10 = ______
76 + 20 = ______
60 + 20 = ______
57 + 20 = ______
